package com.sky.interceptor;

import com.sky.constant.JwtClaimsConstant;
import com.sky.context.BaseContext;
import com.sky.properties.JwtProperties;
import com.sky.utils.JwtUtil;
import io.jsonwebtoken.Claims;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * jwt用户令牌拦截器
 */
@Component
@Slf4j
public class JwtTokenUserInterceptor implements HandlerInterceptor {
    @Autowired
    private JwtProperties jwtProperties;

    /**
     * 校验用户端jwt
     * @param request
     * @param response
     * @param handler
     * @return
     * @throws Exception
     */
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception{
        if(!(handler instanceof HandlerMethod)){
            return true;
        }
        String token=request.getHeader(jwtProperties.getUserTokenName());
        try{
            log.info("用户端jwt校验：{}",token);
            Claims claims= JwtUtil.parseJWT(jwtProperties.getUserSecretKey(),token);
            Long userId=Long.valueOf(claims.get(JwtClaimsConstant.USER_ID).toString());
            log.info("当前登录用户id：{}",userId);
            BaseContext.setCurrentId(userId);
            return true;
        }catch(Exception ex){
            response.setStatus(401);
            return false;
        }
    }
}
